CN217186595U - Acetabular cup prosthesis lining structure - Google Patents
Acetabular cup prosthesis lining structure Download PDFInfo
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- CN217186595U CN217186595U CN202122420604.XU CN202122420604U CN217186595U CN 217186595 U CN217186595 U CN 217186595U CN 202122420604 U CN202122420604 U CN 202122420604U CN 217186595 U CN217186595 U CN 217186595U
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- acetabular cup
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Abstract
The utility model belongs to the technical field of medical apparatus, in particular to an acetabular cup prosthesis lining structure, which comprises an acetabular cup body; a liner rotatably mounted within the acetabular cup, the liner having a hemispherical outer surface and a hemispherical inner cavity; the liner further comprises: the dislocation prevention component is arranged at the bottom of the lining and is used for preventing the dislocation of the head of the femoral head; the slideway is concavely arranged inside the lining, a plurality of slideways are arranged at intervals along the annular bottom surface of the lining, and the inner walls of two sides of the slideway are symmetrically provided with bulges; the magnetic part is slidably arranged in the anti-dislocation assembly, rotating rods are rotatably arranged on two sides of the magnetic part, and an elastic part is connected between the two rotating rods and the magnetic part; the magnetic balls are opposite to the magnetic part in magnetism, the femoral head ball head can be conveniently installed by arranging the lining, and different kinds of linings can be selected according to the specific condition of a patient when the prosthesis is installed by arranging the dislocation preventing component.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to an acetabular cup false body lining structure.
Background
In acetabulum arthroplasty, a modular acetabular prosthesis is often used to replace a diseased acetabulum of a human body. The assembled acetabular prosthesis comprises an acetabular cup prosthesis and an acetabular liner prosthesis. In clinical operation, the acetabular cup prosthesis is implanted into a molar socket of a human body, and then the hip lining prosthesis is assembled into the acetabular cup prosthesis.
In the artificial hip joint prosthesis replacement operation, the design and the installation position of the acetabular prosthesis are very important, and the installation position of the acetabular prosthesis can directly influence the biomechanics of the hip joint, the moving range of the prosthesis, the abrasion of the acetabular liner, the dislocation of the prosthesis, the later stability and the like.
The existing acetabular cup prosthesis lining lacks necessary dislocation prevention components when in use, so that the ball head is easy to dislocate in the use process, is inconvenient to install, and is easy to have unstable joints or limited functions after operation.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an acetabular cup prosthesis lining structure aims at solving current acetabular cup prosthesis lining and lacks necessary anticreep subassembly when using, leads to the bulb to produce the dislocation easily in the use, and is not convenient for install, and the easy problem that the joint is unstable or the function is limited appears in the postoperative.
The embodiment of the utility model provides a realize like this, an acetabular cup prosthesis lining structure, lining structure includes:
an acetabular cup;
a liner rotatably mounted within the acetabular cup, the liner having a hemispherical outer surface and a hemispherical inner cavity;
the liner further comprises:
the dislocation prevention component is arranged at the bottom of the lining and used for preventing the dislocation of the head of the femoral head;
the slideway is concavely arranged inside the lining, a plurality of slideways are arranged at intervals along the annular bottom surface of the lining, and the inner walls of two sides of the slideway are symmetrically provided with bulges;
the magnetic part is slidably arranged in the anti-dislocation assembly, rotating rods are rotatably arranged on two sides of the magnetic part, and an elastic part is connected between the two rotating rods and the magnetic part;
the magnetic balls are arranged at the end parts of the two rotating rods, and the magnetism of the magnetic balls is opposite to that of the magnetic part;
the driving piece, with the magnetism spare links to each other for drive the magnetism spare and remove along the direction that is on a parallel with the slide, when the magnetism spare removed predetermined position, two bull sticks of magnetism control and protruding joint, thereby realize being connected between inside lining and the anticreep subassembly.
Preferably, the drive member comprises:
the sleeve is sleeved on the side surface of the magnetic part in a sliding manner;
the elastic piece is fixed inside the sleeve, and one end of the elastic piece is connected with the magnetic piece;
and the second magnetic part is arranged at the bottom of the sleeve and is fixed in the anti-dislocation component.
Preferably, the disengagement prevention component includes:
the annular plate is arranged at the bottom of the lining;
the arc-shaped bulges are distributed along the bottom of the annular plate, and the dislocation of the acetabulum prosthesis is prevented by adjusting the size of the opening of the acetabulum cup.
Preferably, the inner liner is a highly crosslinked polyethylene or a VE-containing highly crosslinked polyethylene material.
Preferably, the lining structure further comprises a plurality of mounting grooves formed in the side surface of the acetabular cup body.
The embodiment of the utility model provides a pair of acetabular cup false body lining structure, be convenient for carry out the installation of femoral head bulb through setting up the inside lining, see through to set up the dislocation prevention subassembly and be convenient for when the installation false body, can select different kinds of inside linings according to patient particular case, make the center of acetabular cup false body produce corresponding skew, thereby resume hip joint normal centre of rotation, extension false body life, be convenient for when using conveniently carry out the installation of dislocation prevention subassembly through magnetic force through setting up slide and magnetic part, it is relative with the inside lining through with dislocation prevention subassembly, under the effect of driving piece, the magnetic part gets into the inside slide of inside lining, then under the effect of magnetic part, thereby two bull sticks rotate with protruding mutual joint, and then realize automatic installation's function, when preventing the dislocation of acetabular cup false body, it is convenient and reliable to use more.
Drawings
Fig. 1 is an overall structural view of a lining structure of an acetabular cup prosthesis according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a joint of an acetabular cup prosthesis lining structure according to an embodiment of the present invention;
fig. 3 is a structural view of an anti-dislocation assembly of a liner structure of an acetabular cup prosthesis according to an embodiment of the invention;
fig. 4 is a top view of an acetabular cup prosthesis liner structure according to an embodiment of the invention.
In the drawings: 1 acetabular cup body, 2 anti-dislocation components, 201 annular plates, 202 arc-shaped bulges, 3 driving parts, 301 sleeves, 302 elastic parts, 303 second magnetic parts, 4 linings, 5 slideways, 6 bulges, 7 rotating rods, 8 magnetic balls, 9 micro-electromagnets and 10 mounting grooves.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1 to 3, a structure diagram of an acetabular cup prosthesis lining structure according to an embodiment of the present invention includes:
an acetabular cup body 1;
a liner 4 rotatably mounted inside the acetabular cup 1, the liner 4 having a hemispherical outer surface and a hemispherical inner cavity;
the lining structure further comprises:
the dislocation prevention component 2 is arranged at the bottom of the liner 4 and is used for preventing the dislocation of the head of the femoral head;
the slide ways 5 are concavely arranged inside the lining 4, a plurality of slide ways are arranged at intervals along the annular bottom surface of the lining 4, and the inner walls of two sides of each slide way 5 are symmetrically provided with bulges 6;
the magnetic part is slidably arranged in the anti-dislocation component 2, rotating rods 7 are rotatably arranged on two sides of the magnetic part, and an elastic part is connected between the two rotating rods 7 and the magnetic part;
the magnetic balls 8 are arranged at the end parts of the two rotating rods 7, and the magnetism of the magnetic balls 8 is opposite to that of the magnetic part;
driving piece 3, with the magnetic part links to each other for drive the magnetic part and remove along the direction that is on a parallel with slide 5, when the magnetic part removed predetermined position, two bull sticks 7 of magnetic part control and protruding 6 joint, thereby realize being connected between inside lining 4 and the anticreep subassembly 2.
The utility model discloses an embodiment, be convenient for carry out the installation of femoral head bulb through setting up inside lining 4, see through setting up dislocation prevention subassembly 2 and be convenient for when the installation false body, can select different kinds inside lining 4 according to patient's particular case, make the center of acetabular bone false body produce corresponding skew, thereby resume hip joint normal centre of rotation, extension false body life, be convenient for when using conveniently carry out dislocation prevention subassembly 2's installation through magnetic force through setting up slide 5 and magnetic part, through being relative with dislocation prevention subassembly 2 and inside lining 4, under the effect of driving piece 3, the magnetic part gets into inside slide 5 of inside lining 4, then under the effect of magnetic part, thereby two bull sticks 7 rotate and protruding 6 mutual joint, and then realize automatic installation's function, when preventing the dislocation of acetabular bone false body, it is more convenient and reliable to use.
The utility model discloses an in the example, the magnetic part can be miniature electro-magnet 9, produces magnetic force through setting up at the inside miniature power supply of anticreep position subassembly 2 to drive two bull sticks 7 and rotate, the elastic component can be spring 9 or pressure spring, thereby realizes automatic installation's effect.
As shown in fig. 2, as a preferred embodiment of the present invention, the driving member 3 includes:
the sleeve 301 is sleeved on the side surface of the magnetic part in a sliding manner;
the elastic piece 302 is fixed inside the sleeve, and one end of the elastic piece is connected with the magnetic piece;
and the second magnetic part 303 is installed at the bottom of the sleeve and fixed inside the anti-dislocation assembly 2.
In practical application, the second magnetic member 303 is opposite to the magnetic member in magnetism, so that the magnetic member stretches the elastic member 302 to move under the action of magnetic force, and when the elastic member reaches a predetermined position, the elastic member 302 is fixed under the action of elastic force.
Illustratively, the second magnetic member 303 may be a magnet, and the elastic member 302 may be a tension spring.
As shown in fig. 3, as another preferred embodiment of the present invention, the anti-dislocation assembly 2 includes:
an annular plate 201 installed at the bottom of the liner 4;
and the arc-shaped bulge 202 is arranged along the bottom of the annular plate 201 and is used for preventing the dislocation of the acetabular prosthesis by adjusting the opening size of the acetabular cup.
This embodiment is when practical application, is convenient for avoid the dislocation of mortar liner through setting up dislocation prevention subassembly 2 to the easy problem that appears the joint unstability or the function is limited of postoperative has been avoided.
As another preferred embodiment of the present invention, as shown in fig. 4, the lining 4 is made of highly cross-linked polyethylene or VE-containing highly cross-linked polyethylene.
Specifically, the lining structure further comprises a plurality of mounting grooves 10 arranged on the side surface of the acetabular cup, and the number of the mounting grooves 10 is multiple.
This embodiment is when practical application, and the material through setting up inside lining 4 is the high cross-linked polyethylene or contains VE high cross-linked polyethylene material and is convenient for strengthen its use intensity, is convenient for can conveniently install and fix when performing the operation through setting up the mounting groove, and it is more convenient and reliable to use.
The above embodiment of the present invention provides a lining structure of acetabular cup prosthesis, which is convenient for installing the head of femoral head by arranging the lining 4, and is convenient for installing the prosthesis by arranging the dislocation preventing component 2, different kinds of lining 4 can be selected according to the specific situation of the patient, so that the center of acetabular cup prosthesis generates corresponding deviation, thereby recovering the normal rotation center of hip joint, and prolonging the service life of prosthesis, and is convenient for installing the dislocation preventing component 2 by magnetic force when using by arranging the slideway 5 and the magnetic component, and by making the dislocation preventing component 2 opposite to the lining 4, under the action of the driving component 3, the magnetic component enters the slideway 5 inside the lining 4, and then under the action of the magnetic component, the two rotating rods 7 rotate to be mutually clamped with the bulge 6, thereby realizing the function of automatic installation, and by arranging the lining 4 made of high cross-linked polyethylene or VE-containing high cross-linked polyethylene material, so as to enhance the use strength, the installation groove is convenient to install and fix during operation, and the acetabular prosthesis is prevented from dislocation and is more convenient and reliable to use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (5)
1. An acetabular cup prosthesis liner structure, the liner structure comprising:
an acetabular cup;
a liner rotatably mounted within the acetabular cup, the liner having a hemispherical outer surface and a hemispherical inner cavity;
characterized in that the liner further comprises:
the dislocation prevention component is arranged at the bottom of the lining and used for preventing the dislocation of the head of the femoral head;
the slideway is concavely arranged inside the lining, a plurality of slideways are arranged at intervals along the annular bottom surface of the lining, and the inner walls of two sides of the slideway are symmetrically provided with bulges;
the magnetic part is slidably arranged in the anti-dislocation assembly, rotating rods are rotatably arranged on two sides of the magnetic part, and an elastic part is connected between the two rotating rods and the magnetic part;
the magnetic balls are arranged at the end parts of the two rotating rods, and the magnetism of the magnetic balls is opposite to that of the magnetic part;
the driving piece, with the magnetism spare links to each other for drive the magnetism spare and remove along the direction that is on a parallel with the slide, when the magnetism spare removed predetermined position, two bull sticks of magnetism control and protruding joint, thereby realize being connected between inside lining and the anticreep subassembly.
2. The acetabular cup prosthesis liner structure of claim 1, wherein the driver comprises:
the sleeve is sleeved on the side surface of the magnetic part in a sliding manner;
the elastic piece is fixed inside the sleeve, and one end of the elastic piece is connected with the magnetic piece;
and the second magnetic part is arranged at the bottom of the sleeve and fixed in the anti-dislocation component.
3. An acetabular cup prosthesis liner construction according to claim 2, the dislocation prevention assembly including:
the annular plate is arranged at the bottom of the lining;
the arc-shaped bulges are distributed along the bottom of the annular plate, and the dislocation of the acetabulum prosthesis is prevented by adjusting the size of the opening of the acetabulum cup.
4. The acetabular cup prosthesis liner structure of claim 1, wherein the liner is a high cross-linked polyethylene or a VE-containing high cross-linked polyethylene material.
5. The acetabular cup prosthesis liner structure of claim 3, further comprising a plurality of mounting grooves formed in a side surface of the acetabular cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420604.XU CN217186595U (en) | 2021-10-08 | 2021-10-08 | Acetabular cup prosthesis lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420604.XU CN217186595U (en) | 2021-10-08 | 2021-10-08 | Acetabular cup prosthesis lining structure |
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| Publication Number | Publication Date |
|---|---|
| CN217186595U true CN217186595U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122420604.XU Active CN217186595U (en) | 2021-10-08 | 2021-10-08 | Acetabular cup prosthesis lining structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117137687A (en) * | 2023-10-30 | 2023-12-01 | 北京爱康宜诚医疗器材有限公司 | Acetabular cup assembly |
-
2021
- 2021-10-08 CN CN202122420604.XU patent/CN217186595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117137687A (en) * | 2023-10-30 | 2023-12-01 | 北京爱康宜诚医疗器材有限公司 | Acetabular cup assembly |
| CN117137687B (en) * | 2023-10-30 | 2024-03-15 | 北京爱康宜诚医疗器材有限公司 | Acetabular cup assembly |
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